Walmart has the Samsung 64GB EVO Micro SDXC Class 10 Memory Card with Adapter, model no. MB-MP64DA/AM, for $19.57 (59.99 – 40.42 instant savings) for a limited time. Shipping adds 97-cents or you can opt to have it shipping to a local Walmart store or FedEx Office locations for pickup for Free.

Samsung has the Samsung 64GB PRO SDXC Class 10 Memory Card, model no. MB-SG64D/AM, for $29.99 with Free Shipping for a limited time.
Amazon also has it for the same price.

Get the most out of your smartphone or tablet PC with Samsung’s EVO 64 GB microSD Memory Card. This high-performance memory card features read speeds of up to 48 MB/s for transferring music, photos, and videos and is UHS-1 enabled to capture Full HD video. Waterproof, temperature proof, magnet proof, and X-ray proof, this reliable memory card ensures your files remain safe during life’s little mishaps. An included SD adapter lets you use the card with your digital camera, laptop, or desktop computer.

The Samsung’s PRO 64 GB SD Memory Card delivers extremely fast read speeds of up to 90 MB/s for quick transfer of high-resolution photos and videos and is UHS-1 enabled for Full HD and 3D video recording. Waterproof, temperature proof, shockproof, magnet proof, and X-ray proof, this reliable memory card ensures that memories of your vacation, wedding, or child’s graduation remain safe.